#
# Copyright (C) 2010, 2012-2013, 2016 ARM Limited. All rights reserved.
# 
# This program is free software and is provided to you under the terms of the GNU General Public License version 2
# as published by the Free Software Foundation, and any use by you of this program is subject to the terms of such GNU licence.
# 
# A copy of the licence is included with the program, and can also be obtained from Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
#

MALI_DRM_FILE_PREFIX =

# For each arch check: CROSS_COMPILE , KDIR , CFLAGS += -DARCH

ARCH ?= arm
## @note Should allow overriding of building MALI DRM for non-debug:
EXTRA_CFLAGS += -DDEBUG

DRM_SYMVERS_FILE = ../drm/Module.symvers
KBUILD_EXTRA_SYMBOLS = $(KBUILD_EXTMOD)/$(DRM_SYMVERS_FILE)


# linux build system integration

ifneq ($(KERNELRELEASE),)
# Inside the kernel build system

EXTRA_CFLAGS += -I$(KBUILD_EXTMOD) -I$(KBUILD_EXTMOD)/include -I$(KBUILD_EXTMOD)/../drm/include/

SRC +=	$(MALI_DRM_FILE_PREFIX)mali/mali_drv.c \
	$(MALI_DRM_FILE_PREFIX)mali/mali_mm.c

# Selecting files to compile by parsing the config file

MODULE:=mali_drm.ko

obj-m := $(MODULE:.ko=.o)
$(MODULE:.ko=-y) := $(SRC:.c=.o)

else
# Outside the kernel build system

# Get any user defined KDIR-<names> or maybe even a hardcoded KDIR
-include KDIR_CONFIGURATION

# Define host system directory
KDIR-$(shell uname -m):=/lib/modules/$(shell uname -r)/build

ifeq ($(ARCH), arm)
	# when compiling for ARM we're cross compiling
	export CROSS_COMPILE ?= arm-none-linux-gnueabi-
	# default to Virtex5
	CONFIG ?= pb-virtex5
else
	# Compiling for the host
	CONFIG ?= $(shell uname -m)
endif

# default cpu to select
CPU ?= ct11mp

# look up KDIR based om CPU selection
KDIR ?= $(KDIR-$(CPU))
ifeq ($(KDIR),)
$(error No KDIR found for platform $(CPU))
endif

all:
	$(MAKE) ARCH=$(ARCH) -C $(KDIR) M=$(CURDIR) modules

kernelrelease:
	$(MAKE) -C $(KDIR) kernelrelease

clean:
	$(MAKE) ARCH=$(ARCH) -C $(KDIR) M=$(CURDIR) clean

endif
